[MAINTENANCE] Refactor and clean up.

[alexsherstinsky]

Scope

• Make the implementation for the fix of the ViTEncoder to ensure that the transformers.ViTModel returns the output_attentions more elegant (and cuts on the amount of code).

Code Pull Requests

Please provide the following:

• a clear explanation of what your code does
• if applicable, a reference to an issue
• a reproducible test for your PR (code, config and data sample)

Documentation Pull Requests

Note that the documentation HTML files are in docs/ while the Markdown sources are in mkdocs/docs.

If you are proposing a modification to the documentation you should change only the Markdown files.

api.md is automatically generated from the docstrings in the code, so if you want to change something in that file, first modify ludwig/api.py docstring, then run mkdocs/code_docs_autogen.py, which will create mkdocs/docs/api.md .

[github-actions[bot]]

Unit Test Results

  6 files  ±0    6 suites  ±0   14m 23s :stopwatch: +2s 12 tests ±0    9 :heavy_check_mark: ±0    3 :zzz: ±0  0 :x: ±0  60 runs  ±0  42 :heavy_check_mark: ±0  18 :zzz: ±0  0 :x: ±0 

Results for commit 9b91d6bb. ± Comparison against base commit 70539666.

:recycle: This comment has been updated with latest results.